Structural origins of diamagnetic anisotropy in proteins.
نویسندگان
چکیده
منابع مشابه
Diamagnetic anisotropy of the peptide group.
A simple theory of the diamagnetic anisotropy of noncyclic planar groups of atoms with resonance structures (mobile electrons)leads to the value --5.36 x 10(-6) cm-g-sec electromagnetic units for the molar diamagnetic anisotropy of the peptide group.
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The observed anisotropy of the diamagnetic susceptibility, AX, for oriented nematic liquid crystals of poly-y-benzyl-L-glutamate (PBLG) in dichloromethane is 6.8 &0.7 x 10-9 emu/cm3. For a PBLG axial ratio of 150, a value of the twist elastic constant K22 = 582 x 10-8 dynes is calculated by measuring the critical magnetic field for untwisting the cholesteric supramolecular structure in the PBLG...
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Amorphous silica density at ambient pressure is known to depend on thermal history (through the quenching rate) but also, at room temperature, on the maximum pressure applied in the past. Here we show that beyond density, a mechanical loading can endow the structure with an orientational order. Molecular dynamics simulations show evidence that amorphous silica develops a permanent anisotropic s...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1978
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.75.11.5475